package cn.itcast.controller;

import cn.itcast.constant.MessageConstant;
import cn.itcast.entity.Result;
import cn.itcast.service.MemberService;
import cn.itcast.service.ReportService;
import cn.itcast.service.SetmealService;
import com.alibaba.dubbo.config.annotation.Reference;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/*
 *Author:TH
 *Dete:2019/10/3110:26
 * 获取会员折线图
 */
@RestController
@RequestMapping("/report")
@PreAuthorize("hasAuthority('REPORT_VIEW')")//权限校验
public class ReportController {

    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @Reference
    private ReportService reportService;

    @RequestMapping("/getMemberReport")
    public Result getMemberReport(){
        //装月份对应会员数量
        Map<String,Object> map = new HashMap<>();
        //装月份
        List<String> months = new ArrayList();
        //获得日历对象，模拟时间就是当前时间
        Calendar calendar = Calendar.getInstance();
        //获得当前时间往前推12个月的时间
        calendar.add(Calendar.MONTH,-12);
        for(int i=0;i<12;i++){
            //获得当前时间往后推一个月日期
            calendar.add(Calendar.MONTH,1);
            Date date = calendar.getTime();
            months.add(new SimpleDateFormat("yyyy.MM").format(date));
        }
        map.put("months",months);

        List<Integer> memberCount = memberService.findMemberCountByMonths(months);
        map.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
    }


    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport(){
        //新建map集合,存放返回的数据,String是套餐名称
        Map<String,Object> data = new HashMap<>();
        try {
            //查询套餐统计信息,包括套餐名和套餐预定信息
            List<Map<String,Object>> setmealCount =setmealService.findfindSetmealCount();
            //查询成功
            data.put("setmealCount",setmealCount);
            //新建集合存放套餐名称
            List<String> setmealNames = new ArrayList<>();
            //遍历集合
            for (Map<String, Object> objectMap : setmealCount) {
                String name = (String) objectMap.get("name");
                setmealNames.add(name);
            }
            data.put("setmealNames",setmealNames);
            return new Result(true,MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,data);
        } catch (Exception e) {
            e.printStackTrace();
            //查询失败
            return new Result(false,MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }


    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){

        try {
            Map<String,Object> result = reportService.getBusinessReportData();
            //查询成功
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,result);
        } catch (Exception e) {
            e.printStackTrace();
            //查询失败
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }


    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request,
                                       HttpServletResponse response){
        try{
            //远程调用报表服务获取报表数据
            Map<String, Object> result = reportService.getBusinessReportData();
            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer)result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer)result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer)result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer)result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer)result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer)result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer)result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //获得Excel模板文件绝对路径,File.separator 分隔线,windows/,linux\
            String temlateRealPath = request.getSession().getServletContext().getRealPath("template")
                            + File.separator + "report_template.xlsx";
            //读取模板文件创建Excel表格对象
            XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(temlateRealPath)));
            //读取第一个工作表
            XSSFSheet sheet = workbook.getSheetAt(0);
            //获得第三行 2
            XSSFRow row = sheet.getRow(2);
            //获得第六列 5
            row.getCell(5).setCellValue(reportDate);//日期
            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数
            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数
            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数
            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数
            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数
            int rowNum = 12;
            for(Map map : hotSetmeal){//热门套餐
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum ++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }
            //通过输出流进行文件下载
            ServletOutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("content-Disposition","attachment;filename=report.xlsx");
            workbook.write(out);
            out.flush();
            out.close();
            workbook.close();
            return null;
        }catch (Exception e){
            return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }
}
